21533289

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{337}}^1$

素因数の和:437

約数の個数: 24

約数和(自身を含む): 30906720

約数和(自身を除く): 9373431

約数列:

[1, 3, 19, 57, 59, 177, 337, 361, 1011, 1083, 1121, 3363, 6403, 19209, 19883, 21299, 59649, 63897, 121657, 364971, 377777, 1133331, 7177763, 21533289]

約数ペア:

[(1, 21533289), (3, 7177763), (19, 1133331), (57, 377777), (59, 364971), (177, 121657), (337, 63897), (361, 59649), (1011, 21299), (1083, 19883), (1121, 19209), (3363, 6403)]